http://www.nytimes.com/2011/08/21/magazine/do-you-suffer-from-decision-fatigue.html

I just wanted to cross-post this because so much of gaming is about having will-power.

One of the findings is that eating a little bit of glucose will increase your willpower - your ability to make difficult decisions.

Ego is a thing that can be depleted after making lots of decisions. Ego can also be replenished by eating food:

The glucose would at least mitigate the ego depletion and sometimes completely reverse it. The restored willpower improved people’s self-control as well as the quality of their decisions: they resisted irrational bias when making choices, and when asked to make financial decisions, they were more likely to choose the better long-term strategy instead of going for a quick payoff. The ego-depletion effect was even demonstrated with dogs in two studies by Holly Miller and Nathan DeWall at the University of Kentucky. After obeying sit and stay commands for 10 minutes, the dogs performed worse on self-control tests and were also more likely to make the dangerous decision to challenge another dog’s turf. But a dose of glucose restored their willpower.

Anyways, so much about this reddit is about getting the willpower to go out there and get what you want. Perhaps this article can give a little more insight about that willpower.